Woodlawn, the first site operated by the National Trust, was originally part of George Washington’s Mount Vernon. In 1799, he gave the site to his nephew, Lawrence Lewis, and Lewis’ new bride, Nelly Parke Custis, Martha’s granddaughter, in hopes of keeping Nelly close to Mount Vernon. The newly married couple built the Georgian/Federal house designed by William Thornton, architect of the U.S. Capitol.

Guided tours of the historic mansion are offered Fridays to Mondays at noon and 1, 2, 3 and 4 p.m.